A clear run for the Gotthard: innovative earthing technology for the record-breaking base tunnel

The challenge

During operation of the Gotthard Base Tunnel, which passes through the mountain massif at a record length of 57 km, the tracks must remain passable for diesel-powered emergency vehicles at all times. Conventional earthing and short-circuiting (E&S) devices would not be practical due to their need to have the line blocked.

The solution

PFISTERER developed a special earthing and short-circuiting device that can be installed on the ceiling of the tunnel without profiles or barriers. Instead of the usual earthing technology, the feed line is simply short-circuited at a height of 5.5 m by a torque-controlled, removable earthing rod. This innovative rod enables precise positioning and secure screwing of the clamps, as it can only be removed once the required torque has been achieved.

Products used

Torque-controlled, removable earthing rods
Earthing and short-circuiting devices

Special features

The solution ensures that the tracks remain continuously passable even during the construction work. The use of torque-controlled earthing rods enables safe and precise installation at height, while the holding brackets make handling easier and speed up the installation process.

Customer testimonials

„An impressive feat of engineering that enables safe and efficient maintenance of the Gotthard Base Tunnel.“

Downloads

Catalogue - Safety Equipment Utilities

CONNECT 2015-2

CONNECT 2015-1

KP-Test 5 product information

Simple voltage detection

Catalogue Safety Equipment Railway

CONNECT 2016-2 Safety Equipment Railway

KP-Test 5D dual product information